I also started on the engine bay yesterday after the filter had gone in.
It was looking a bit "brown" under there.........this is how it started.

I had to replace the rocker gasket so everything came off. While it was in bits I de-greased the rocker cover and gave it a couple of coats of exhaust paint I had left over from me biking days and I thought I had best put the polished 50mm inlet I bought on

this also meant I had to paint the lower inlet.

I also got a polished rocker cover to go on but I decided that a black cover would be the sensible option

I have the valeting guy coming over to work on the 23rd of April to give the whole engine bay a good de-grease and steam clean, then I can carry on getting some shiny parts fitted.